Improvement in stone and ore crushers



C. E. HALL. swoma AND om. CRUSHERS.

Patent'ed Feb; 13, 1- 17.

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N.FETERS, PHOTd-LITNOGRAFH TR, WASHINGTON. D. Cvv

CHARLES EDWARD HALL, OF LEEDS, ENGLAND.

IMPROVEMENT IN STONE AND ORE CEUSHERS.

Specification forming partof Letters Patent No. 187,375. dated February13, 1877 application filed August 110, 1876.

- To all whom it may concern:

Be it known that I, CHARLES EDWARD HALL, of Leeds, in the county ofYork, England, engineer, have invented new and useful Improvements inStone and Ore Crushers, which improvements are fully set forth in thefollowing specification, reference being had to the accompanyingdrawings.

My invention consists, first, of the improvements hereinafter describedin actuating the vibratingjaws of stone breaking and crushing machinesbymeans of cranks, eccentrics, or cams formed on or affixed to thedriving shaft of such machines, so as to produce, a multiple action.

My said invention further consists of the improvements hereinafterdescribed in the faces of the vibrating jaw or jaws thereto, and ofconnecting the jaws together, so that the motion of the advancing jaw isutilized to bring back the receding'jaw.

In applying my improvements to such stone breaking'or crushing machinesas have several vibrating jaws hung side by side on the same shaft orfulcrum, I form on, or affix to, the driving-shaft of the machinecranks, eccentrics, or cams, one for each vibrating jaw; and I mount onthe said cranks, eccentrics, or cams connecting rods, the lower ends ofwhich, on one side, are connected by toggles to the vibrating jaws. Thecranks, eccentrics, or cams are formed on, or affixed to, their shaftsat equal radial angles, so as to balance the momentum of the movingparts of the machine, and successively actuate the vibrating jaws. Thussome of the said jaws will be advancing to, while others are recedingfrom, the fixed jaw, so that while the advancing jaws are operating onthe stones to be broken, the receding jaws leave a passage for thestones which have been broken. The strain on the machine is thus greatlydiminished, and it can, consequently, be made lighter than machines ofthe ordinary construction.

In some cases I dispense with the india-rubber springs usually employedfor drawing back the swinging jaws, and I couple the said jaws togetherin pairs by rods and a lever of the first order, the said lever beingcapable of vibratory motion in a horizontal plane. The advance of one ofthe coupled jaws is thus caused to effect the withdrawal of the other.

Figures 1 and 2 of the accompanying drawings represent vertical sectionsof a stone breaking or crushing machine to which my improvements areapplied-the section Fig. l

being taken on the line 1, Fig. 2, and the section Fig. 2 being taken onthe lines 2 3, Fig. 1. Fig. 3 is a half-plan, half-section, of the saidmachine, the section being taken on the line 4, Fig. 1.' Figs. 4, 5, 6,7, 8, and 9 are details of the said machine.

The same letters of reference indicate the same parts in both figures.

A A is the frame of the machine. B is the fixed jaw. O O are thevibrating jaws, and 0 is-the fulcrum on which they vibrate. D is thedriving-shaft, and d d are the eccentrics, on which are mounted theconnecting-rods E E. F F are toggles, which transmit motion from theconnecting-rods to thejaws O (J. b b

are the teeth on the fixed jaw, and c c are the teeth on the swing-jaws.The upper sets of teeth are of coarser pitch than the lower, the bottomof the teeth being flush with the top of the teeth in each succeedingface. The teeth 0 c are fixed to the jaw by means of wedges c driven insidewise between the said faces and lugs or projections c 0 011 thejaws.

This arrangement admits of the faces being unfixed, and turned upsidedown and refixed, so as to bring their least-worn edges into wear, or ofremoving the said. faces when worn and fixing others in their place. Therepairing and maintenance of the machine are thus facilitated.

Although I prefer this mode of affixing the faces, I do not limit myselfthereto, as the said faces may be fixed in any other suitable way.

0 c are fly-wheels, and c is the drivingpulley.

The parts not described are of the ordinary construction.

The foregoing improvements are applicable both to machines constructedwith vibrating and fixed jaws, and to machines in which a lever is madetobreak or crush the stone against a fixed or movingjaw, between whichand the said lever the stones are broken.

In applying my improvements to stonebreaking machines constructed with asingle vibrating jaw, instead of a series of vibrating jaws mounted sideby side, as hereinbefore described, I form on or affix to thedrivingshaft a multiple-cam motion, from which is transmitted to thesaid jaw by a connectingrod and toggles as heretofore, so that everyrevolution of the driving-shaft shall give two or more vibrations to thesaid jaw. The machine is thus caused to do more work, with a given speedof driving-shaft, than machines of the ordinary construction. Frictionrollers or bars are interposed between the connectingrod and thedriving-shaft, the lower roller or bar being pressed upward by a springso as to keep it tight against the cam. I prefer to make the saidconnecting-rod in two halves, of such form that when bolted togetherthey constitute a case which incloses the principal wearing parts on orabout the shaft, and protects them from dust and grit. Figs. 10 and 11of the accompanying drawings rep resent vertical sections of a stonebreaking or crushing machine of the class hereinbefore last described,and to which my improvements are applied, the section, Fig. 10, beingtaken on the line 5, Fig. 11, and the section, Fig. 11, being taken on,the line 6, Fig. 10.

The same letters of reference indicate the same parts in both figures.

A A is the frame of the machine, and B is the driving shaft, on which'isformed or afiixed the multiple cam b '0 O are the halves of theconnecting-rod, which are held together by the screwed spindle 0 andnuts 0 c and the screwed bolt 0 and nuts 0 c. c c are slots formed inthe connecting-rod, toallow of its moving up and down on thedriving-shaft. 0 is a friction-rollermounted on the spindle c, whichroller bears on the cam b 0 is a friction bar or roller, which ispressed against the said cam by a spring, 0 and keeps the parts to theirwork. D D are toggles, which communicate the motion of theconnecting-rod to the vibrating jaw E. b is a Ely-wheel, and b is thedriving-pulley.

The parts not described are of the ordinary construction. I

Fig. 12 of the accompanying drawings is a sectional plan of part of astone-breaking machine, to which my arrangement for coupling the jawsthereof is applied. 0 O are the vibrating jaws or levers. G G are therods, and g is the lever by which the said jaws are coupled, the saidlever 9 being centered on the pin g By this arrangement when one of thejaws is caused, by the action of the tog-.

gles, to advance, the jaws to which it is coupled are caused to recede.

Having now described the nature of my invention, and the manner in whichthe same is to be'performed, I wish it to be understood that I do notlimit myself to the precise details hereinbefore described, as they maybe varied without departing from the nature of my said invention but Iclaim as my said invention- 1. The combination of the vibrating jaws andconnecting-rods and toggles, one set for each jaw, with thedriving-shaft of the machine, provided with cranks, eccentrics, or cams,one for each jaw, arranged successively to actuate the several vibratingjaws through their connecting-rods and toggles, substantially as setforth.

2. The combination, substantially as described, of the vibrating jaw orjaws and-the connecting rod or rods, and toggles for the same, with thedriving-shaft of the machine provided with a multiple cam or cams,formed and arranged to impart, through said connecting rods or rods andtoggles, two or more vibrations to the said vibrating jaw or jaws foreach revolution of said driving-shaft.

3. In a stone crushing or breakingmachine, the combination of swingingjaws arranged side by side to act alternately in the same direction, andcoupled substantially in the manner herein shown and described, so thatthe advancing movement of one swinging jaw shall cause the other jaw torecede.

CHARLES EDWARD HALL.

Witnesses:

JOHN WILLIAM CAMPBELL, JOHN HUNTER.

